Question

In a plasma membrane, how do the tails of the phospholipid molecules line up?

They are sandwiched between two layers of heads.

They tangle randomly to form a fiber.

They alternate with the heads.

They stick out with the heads in the center.

Answer 1

my answer would be A. Thay are sandwiched between two layers of heads.

Answer 2

The correct answer is option They are sandwiched between two layers of heads.

The cells have a cell membrane consisting of lipid bilayer, the bilayer is made up of hydrophilic head and the hydrophobic tail. the phospholipids arrange themselves in two layers, which have all the head facinng outside in such a way that the tails are sandwiched between the bilayer of the heads. The heads are exposed to outside environment of the cell on the outer side and the head on the inner side is exposed to the cytoplasm.